/* 背景图 */
.app {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: url(../img/background_min.jpg) no-repeat;
    background-size: cover;
}

/* logo图标位置 */
.top-logo {
    position: fixed;
    left: 80px;
    top: 80px;
    width: 160px;
    height: 40px;
    background: url(../img/page-logo.png) no-repeat;
    background-size: 160px 40px;
}

/* 中间样式 */
.wrapper-text {
    position: fixed;
    left: 195px;
    top: 314px;
    color: #fff;
}

.wrapper-text h1 {
    font-size: 54px;
    font-weight: 700;
}

.wrapper-text p {
    margin-top: 20px;
    font-size: 32px;
    letter-spacing: 3.81px;
    font-weight: 300;
}

/* 页脚样式 */
.wrapper-footer {
    position: fixed;
    left: 70px;
    bottom: 57px;
    font-size: 14px;
    color: #fff;
}

.wrapper-footer a {
    opacity: .8;
    text-decoration: none;
    color: #fff;
    cursor: pointer;
}

.wrapper-footer .help {
    display: inline-block;
    width: 2px;
    height: 12px;
    filter: alpha(opacity=78);
    opacity: .78;
    margin: 0 12px 0 13px;
    background: #fff;
    position: relative;
    top: 1px;
}

.wrapper-footer .sign {
    opacity: .54;
    font-size: 12px;
    color: #fff;
    display: inline-block;
    padding-left: 15px;
}

.login-box .login-form span {
    margin: 4px 14px;
    font-size: 12px;
    color: red;
    float: right;
}